ethyl 2,4-dihydroxy-5,6-diMethylnicotinate

2,4-Dihydroxy-5,6-diMethylnicotinic Acid Ethyl Ester

1,2-Dihydro-4-hydroxy-5,6-diMethyl-2-oxo-3-pyridinecarboxylic Acid Ethyl Ester

3-Pyridinecarboxylic acid,1,2-dihydro-4-hydroxy-5,6-dimethyl-2-oxo-,ethyl ester